Source Descendants of Adam de Carey, Murray W. Oltman:
Extract from Burkes Heraldry:
'In the beginning of the reign of Henry V. (1413- 1422) a certain knight-errant of Aragon, having passed through divers countries, and performed many feats of arms, arrived here in England, where he challenged any man of his rank and quality to make a trial of his skill at arms. This challenge was accepted by Sir Robert Cary, between whom a cruel encounter and a long and doubtful combat was waged in Smithfield, London. But at length this noble champion vanquished the presumptuous Arragonois, for which King Henry V, restored unto him a good part of his fathers lands, for which his loyalty to Richard II, he had been deprived of by Henry IV.
He was authorized to bear the arms of a Knight of Aragon, which the noble posterity wear to this day. For according to the Laws of Heraldry , whosoever fairley in the field conquers his adversary may justify the wearing of his arms.'